15491615041 has 24 divisors (see below), whose sum is σ = 19101329280. Its totient is φ = 12484063872.

The previous prime is 15491615033. The next prime is 15491615077. The reversal of 15491615041 is 14051619451.

It is a happy number.

It is not a de Polignac number, because 15491615041 - 2³ = 15491615033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15491615441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 809380 + ... + 828298.

It is an arithmetic number, because the mean of its divisors is an integer number (795888720).

Almost surely, 2^15491615041 is an apocalyptic number.

It is an amenable number.

15491615041 is a deficient number, since it is larger than the sum of its proper divisors (3609714239).

15491615041 is a wasteful number, since it uses less digits than its factorization.

15491615041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19933 (or 19926 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 15491615041 in words is "fifteen billion, four hundred ninety-one million, six hundred fifteen thousand, forty-one".